LA101, CZ457 Single Shot Mag I use for Benchrest shooting with double feed ramps to lift and align bullet into chamber minimising contact to increase accuracy.  Taken from my M14 adaptor grafted onto modified CZ mag to fit the LA101 or CZ.

The feed is intended to be clean avoiding any contact with feed ramps etc.  I like how it catchs the bullet in place and if occasionally it's out of position it only needs a finger coreection.

*Update:*

• 27/04/2025: 
  Pepe Lepew added slight fix to improve fit, function and bolt cleanace in CZ457.  
  Incorporated these changes into my original.
• He also added grip extension to help with removal from CZ457, not needed for LA101. Link to that version https://www.printables.com/model/1277433-cz457-single-shot-sled.
• He “like how the bullet sits within the sled as well as the angle in this design which helps direct the round into the chamber without hitting any other surfaces”.  Thankyou, it was the intention off the design.

*Printing:*

Nothing special just use fine layers for smoother ramp.

Printables Tags: shooting; magazine; sled; 22lr; mag; cz457; singleshot; benchrest; la101